Rock-drill saddle.



PATENTED FEB. 5, 1907.

G. 8. POWER. ROCK DRI APPLICATION FILED MAR. 31, 1906.

LL SADDLE.

5% ve 11 to:

CT? twi y GEORGE s. POWER, OE

PAssAro, NEW JERSEY.

ROCK-DRILL SADDLE.

Application filed March 31,

T0 to whom it may concern: j Be it known that I, GEORGE S. POWER, a lcitizen of the United States, and a resident of Passaic, in the countyof Passaic and State of New Jersey, have invented certain ne'wj anduseful Improvements in Rock-Drill Saddles, of which the following is aspecification.

This invention relates to rock-drill saddles, which may be formed withthe body portion 1 of a tripod or secured to an upright column I or anarm projecting therefrom. Its novelty comprises specifically an improvedrej movable clamping-jaw, which latter is car J ried on the saddle andby means of which a drill-back is easily clamped in various positions.

The invention is exemplified in the accompanying drawings with thesaddle designed for an arm projecting from a column, the latter notbeing shown.

Figure 1 shows a top plan view of the saddle and a portion of adrill-back. Fig. 2 shows a partial front view and'section of Fig. 1 onthe line 2 2. Fig. 3 is a right-hand end view of the removableclamping-jaw of the saddle. Fig. 4 is a left-hand end view of the clampingjaw. Fig. 5 represents a side View of the Specification of LettersPatent.

said clamp1ngjaw. Fig. 6 shows a partial section of Fig. 2 on the line 66. Fig. 7 is a partial section of Fig. 2 on the line 7 7. Fig. 8 shows apartial section of Fig. 1 on the line 2 2 with the clamping-j awremoved.

An arm has clamped thereto the body portion 21 of a saddle by means ofthe cap 22 and bolts 23 with the nuts 24. The portion 21 has formedtherewith in the usual manner a dovetailed semicircular flange 25, inwhich is supported a conical projection 26 of a drill-back 27.

Under a pair of lugs 28 extending from the body portion 21 of thesaddles is supported a cross-bar 29 of a swinging bolt 30, which carriesthe nut 31. The bolt passes through an opening 32 in the removable clamping-j aw 33.

The jaw 33 has formed therewith at its front end the toe 36 and hasextending from its sides adjacent to its back end the pivots 34. Thesaid pivots engage with the elongated bearings 35, that extend from theupper end of the body portion 21 of the saddle. The said bearings extendand are opened to the rear of the pivots 34.

To use the invention, the saddle is clamped in place by tightening thenuts 24 on the bolts 23, which hold the body portion 21 and PatentedFeb. 5, 1907. 1906. Serial No. 309,082.

cap 22 on the arm 20. Then the conical projection 26 of the drill-backis placed in the proper operative position on the dovetailed flange 25.Next the removable clampingjaw 33 islocated in position by engaging thepivots 34 with the elongated and open bearings 35. The bolt being inplace, the nut 31 is screwed down, by virtue of which the toe 36 of theremovable clamping-jaw 33 bears on the conical projection 26 of thedrill-back.

Should it be desired to disengage the projection 26 of the drill-backfrom the dovetailed flange 25, the nut 31 is unscrewed and theclamping-jaw 33 disengaged from the elongated bearings 35 by backing thepivots 34 out of the same. This operation avoids swinging theclamping-jaw 33 on the pivots 34 and avoids the necessity of the toe 36of the jaw swinging and interfering with the rock-drill back 27 whenbeing disconnected.

It will be noted that when the pivots of the clamping-jaw 33 are backedout of the elongated bearings 35 that the bolt 30 swings on itscross-bar 29 under the lugs 28.

Having described my invention, I claim 1. In a saddle for supporting'adrill the combination of a removable clamping-jaw, pivots extending fromthe sides of the jaw, elongated bearings formed in the saddle extendingand opened to the rear of said pivots, and a bolt connecting the saidsaddle and clampingjaw.

2. In a saddle for supporting a drill the combination of a body portiontherefor, a cap bolted to the body portion, a dovetailed flangeextending from the body portion, a pair of lugs in the body portion, abolt, a cross-bar extending from the bolt and engaging with said lugs, aremovable clamp-- ing-jaw engaged with said bolt, pivots extending fromthe sides of the jaw, and elongated bearings formed in the saddleextending and opened to the rear of said pivots.

3. The combination of a drill, a saddle for supporting the same, aconical projection extending from the drill, a dovetailed flangeextending from the saddle engaging the said conical projection, aremovable clampingja'w bearing on the said conical projection, pivotsextending from the sides of the jaw, elongated bearings formed in thesaddle extending and opened to the rear of said pivots, and a swingingbolt extending from the saddle and engaging the olamping-j aw.

, 4. The combination of a drill-back, a pro jection extending therefrom,a saddle for 1 extending and opened to the rear of said piv- IOsupporting the drill-back, a flange extending ots.

from the saddle engaging the said projection Signed at New York, in thecounty of New of the drill-back, lugs on the saddle, a swing York andState of New York, this 26th day ing bolt bearing up against said lugs,a clampof March, AAD. 1906.

ing-jaw engaged with said bolt, a toe on said GEORGE S; POWER. jaWbearing on the projectlon of the dIllll Witnesses:

back, pivots extending from the sides of the MYRON H. 0001;,

jaw, elongated bearings formed in the saddle JOHN J. MILLIN.

